Hatred is something peculiar. You will always find it strongest and most violent where there is the lowest degree of culture.

Everything is simpler than one can imagine, and yet complicated and inter-twined beyond comprehension.

All that is noble is in itself of a quiet nature, and appears to sleep until it is aroused and summoned forth by contrast.

Very few people love others for what they are; rather, they love what they lend them, their own selves, their own idea of them.

When the boy begins to understand that the visible point is preceded by an invisible point, that the shortest distance between two points is conceived as a straight line before it is ever drawn with pencil and paper...the fountain of all thought has been opened to him...the philosopher can reveal him nothing new, as a geometrician he has discovered the basis of all thought.

There is no permanence in doubt; it incites the mind to closer inquiry and experiment, from which, if rightly managed, certainty proceeds, and in this alone can man find thorough satisfaction.

How can one learn to know oneself? Never by introspection, rather by action.